Let the slope of the tangent to a curve at be given by . if the curve passes through the point , then the value of is equal to
- (A)
- (B)✓ Correct
- (C)
- (D)
Answer: (B)
Solution
The differential equation is:
This is a linear first-order ODE:
Integrating factor:
Multiplying and integrating:
Using :
So .
.
This is a linear first-order ODE:
Integrating factor:
Multiplying and integrating:
Using :
So .
.
JEE Main · 2022 · 28 Jun 2022 · Shift 2 · Single correct option